Damper device

Patent metadata

Field	Value
Publication number	US-10677313-B2
Application number	US-201615738005-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jun 26, 2015
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

A rotary inertia mass damper of a damper device is configured to include a planetary gear that includes a driven member with outer teeth, first and second input plate member as a carrier which rotatably supports a plurality of pinion gears, and a ring gear that meshes with the plurality of pinion gears and works as the mass body. The outer teeth of the driven member are arranged to be disposed outside first and second springs in a radial direction of the damper device. The driven member, the plurality of pinion gears and the ring gear are arranged to at least partially overlap with the first and second springs as viewed in the radial direction. A motion of the ring gear in the axial direction is restricted by the plurality of pinion gears.

First claim

The invention claimed is:

1. A damper device configured to include a plurality of rotational elements including an input element to which a torque from an engine is transmitted and an output element, an elastic body configured to transmit a torque between the input element and the output element, and a rotary inertia mass damper with a mass body rotating in accordance with relative rotation between a first rotational element which is one of the plurality of rotational elements and a second rotational element different from the first rotational element,
wherein the rotary inertia mass damper configured to include a planetary gear that includes a sun gear arranged to rotate integrally with the first element, a carrier that rotatably supports a plurality of pinion gears and is arranged to rotate integrally with the second element, and a ring gear that meshes with the plurality of pinion gears and works as the mass body,
wherein outer teeth of the sun gear are arranged to be disposed outside the elastic body in a radial direction of the damper device, wherein the sun gear, the plurality of pinion gears and the ring gear are arranged to at least partially overlap with the elastic body in an axial direction of the damper device as viewed in the radial direction, and

wherein a motion of the ring gear in the axial direction is restricted by the plurality of pinion gears.

2. The damper device according to claim 1 ,
wherein the ring gear of the planetary gear configured to include a pair of supported portions arranged to protrude inwardly in the radial direction to be respectively opposed to at least a side face of a pinion gear of the plurality of pinion gears at both sides of inner teeth of the ring gear in the axial direction.

3. The damper device according to claim 2 ,
wherein inner circumferential surfaces of the supported portions of the ring gear are arranged to be disposed inside tooth bottoms of the inner teeth in the radial direction and outside a pinion shaft in the radial direction, the pinion shaft supporting the pinion gear.

4. The damper device according to claim 2 ,
wherein a pinion gear of the plurality of pinion gears is configured to include annular radially supporting portions that protrude both sides of gear teeth of the pinion gear in the axial direction at an inner circumferential side of tooth bottoms of the gear teeth in the radial direction, and
wherein the inner circumferential surfaces of the supported portions of the ring gear are supported in the radial direction by the radially supporting portions of the pinion gear.

5. The damper device according to claim 1 ,
wherein the plurality of rotational elements includes an intermediate element, wherein the elastic body includes a first elastic body configured to transmit a torque between the input element and the intermediate element, and a second elastic body configured to transmit a torque between the intermediate element and the output element, and
wherein the first rotational element is one of the input element and the output element, and wherein the second rotational element is the other of the input element and the output element.

6. The damper device according to claim 5 ,
wherein the input element configured to include two input plate members arranged to be opposed to each other in the axial direction such as to rotatably support the plurality of pinion gears, the two input plate members working as the carrier,

wherein the output element is a single output plate member disposed between the two input plate members in the axial direction and configured to include the outer teeth in an outer circumference thereof to work as the sun gear, and
wherein the intermediate element configured to include two intermediate plate members between which at least one of the input element and the output element is disposed in the axial direction.

7. The damper device according to claim 5 ,
wherein at least spring constants of the first and the second elastic bodies and moments of inertia of the intermediate element and the ring gear are determined, based on a minimum frequency of frequencies of antiresonance points that provide zero vibration amplitude of the output element.

8. The damper device according to claim 7 ,
wherein power from an internal combustion engine is transmitted to the input element,
and wherein at least the spring constants of the first and the second elastic bodies and the moments of inertia of the intermediate element and the ring gear are determined, based on the minimum frequency of the antiresonance point and number of cylinders of the internal combustion engine.

9. The damper device according to claim 8 ,
wherein the damper device is configured to satisfy 500 rpm≤(120/n)·fa 1 ≤1500 rpm, where “fa 1 ” denotes the minimum frequency of the antiresonance point and “n” denotes the number of cylinders of the internal combustion engine.

10. The damper device according to claim 9 ,
wherein the damper device is configured to satisfy 900 rpm≤(120/n)·fa 1 ≤1200 rpm.

11. The damper device according claim 8 ,
wherein the damper device is configured to satisfy Nlup≤(120/n)·fa 1 , where “Nlup” denotes a lockup rotation speed of a lockup clutch arranged to couple the internal combustion engine with the input element.

12. The damper device according to claim 7 ,
wherein the minimum frequency fa 1 of the antiresonance point is expressed by the following equation:

fa
1

=

1

2
⁢
π

⁢

(

k
1

+

k
2

)

-

(

k
1

+

k
2

)

2

-

4
·

J
2

Assignees

• Aisin Aw Ind Co Ltd
• Aisin Aw Co

Inventors

• Yoshikawa Takuya
• Ogawa Aki
• Kato Akiyoshi
• Otsuka Ryosuke
• Inoue Yoshihiro
• Takikawa Yoshihiro
• Nagai Hiroki
• Wajima Masaki
• Sakamoto Takao
• Itou Kazuhiro

Classifications

• F16F15/12373

  the sets of springs being arranged at substantially the same radius · CPC title

• F16F15/31

  characterised by means for varying the moment of inertia · CPC title

• F16H2045/0268

  the damper comprising a gearing · CPC title

• F16H2045/0226

  comprising two or more vibration dampers · CPC title

• F16H45/02

  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title